Explanatory notes
… crushed ore, after concentration by flotation, is generally roasted or sintered, and is then reduced by smelting. During the roasting or sintering process, the sulphide is largely … 78.01 and 78.02). (B) Products generally obtained by rolling or extruding the unwrought lead of heading 78.01 …Legal note
… Metal containing by weight at least 99.9 % of lead, provided that the content by weight of any other element … Copper Fe Iron S Sulphur …
